Matern care for disproprtn of mix matern & fetl origin, fts3

This code signifies maternal care provided due to a disproportion between the mother's pelvis and the fetus, where the cause is attributed to a combination of maternal and fetal factors. This obstetric complication specifically refers to the third fetus in a multiple gestation pregnancy. It indicates that the size or presentation of this particular fetus is creating an obstruction to labor progression.

Use this code when documentation clearly indicates a diagnosis of cephalopelvic disproportion (CPD) or fetopelvic disproportion (FPD) stemming from both maternal anatomical limitations and characteristics of the third fetus. This typically arises during labor or late pregnancy assessments where a vaginal delivery is deemed difficult or impossible due to the combined disproportion. Supporting documentation should specify "fetus 3" and the mixed origin of the disproportion.

• Ensure documentation explicitly states "fetus 3" to differentiate from other fetuses in a multiple gestation.
• Distinguish from O33.0-O33.3, which specify disproportion due to maternal or fetal causes alone.
• This code is typically a primary diagnosis when the disproportion is the reason for admission or intervention, such as a planned cesarean section.